Critter ID - Looks like little fleas

[Reefing Manny]

Hey Guys, can you help me identify what these small little critters are. They are tons of them everywhere and are brownish in color and seem to move around pretty quick. They are extremely small, and this was the best pics I could get of them. They seem to only come out at night.

 

[Reefing Manny]

Here is a look at them under the microscope

 

[Tired]

Ostracods? Harmless, as far as I know.

 

[Reefing Manny]

Ostracods? Harmless, as far as I know.

Hmmm, I think you are right. Thank you for the info. Going to dig into what these little critters are all about.